<template>
  <div class="person">
    <h2>姓名：{{ name }}</h2>
    <h2>年龄：{{ age }}</h2>
    <button @click="changeName">修改名字</button>
    <button @click="changeAge">修改年龄</button>
    <button @click="showTel">查看联系方式</button>
    <button @click="showAddress">查看地址</button>
  </div>
</template>

<script lang="ts" setup>
  import { ref } from 'vue'
  // 使用 ref 函数包裹的变量，才是响应式的
  let name = ref('张三')
  let age = ref(18)
  let tel = '13288771234'
  let address = '北京市昌平区13号'

  function changeName() {
    name.value = 'zhang-san'
  }

  function changeAge() {
    age.value = 20
  }

  function showTel() {
    alert(tel)
  }

  function showAddress() {
    alert(address)
  }
</script>

<style scoped>
.person {
  background-color: skyblue;
  box-shadow: 0 0 10px;
  border-radius: 10px;
  padding: 20px;
}

button {
  margin: 0 5px;
}
</style>
